Method for image segmentation to identify regions with constant foreground color
First Claim
1. A method for the segmentation of a digital image for representation in a mixed raster content form with a constant foreground, comprising the steps of:
- extracting uniform color objects from the image;
testing at least some of the extracted objects for color consistency to decide if the extracted objects should be coded to a foreground layer in the mixed raster content form;
clustering, in color space, objects that are chosen for representation the foreground layer to associate objects in at least one common color cluster; and
segmenting the image such that each foreground layer represents objects from the common color cluster.
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Abstract
The present invention is a method for image segmentation to produce a mixed raster content (MRC) image with constant foreground layers. The invention extracts uniform text and other uniform color objects that carry detail information. The method includes four primary steps. First, the objects are extracted from the image. Next, the objects are tested for color consistency and other features to decide if they should be chosen for coding to the MRC foreground layers. The objects that are chosen are then clustered in color space. The image is finally segmented such that each foreground layer codes the objects from the same color cluster.
36 Citations
15 Claims
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1. A method for the segmentation of a digital image for representation in a mixed raster content form with a constant foreground, comprising the steps of:
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extracting uniform color objects from the image; testing at least some of the extracted objects for color consistency to decide if the extracted objects should be coded to a foreground layer in the mixed raster content form; clustering, in color space, objects that are chosen for representation the foreground layer to associate objects in at least one common color cluster; and segmenting the image such that each foreground layer represents objects from the common color cluster. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification